نتایج جستجو برای: stefan condition
تعداد نتایج: 318581 فیلتر نتایج به سال:
Gunther H Sandmann ([email protected]) Christopher Adamczyk ([email protected]) Eduardo Grande Garcia ([email protected]) Stefan Doebele ([email protected]) Andreas Buettner ([email protected]) Stefan Milz ([email protected]) Andreas B Imhoff ([email protected]) Stefan Vogt ([email protected]) Rai...
this study investigated the effects of planning on second-language written production with regard to task type. the participants were 75 iranian learners of english as a foreign language attending a private foreign language institution. they were asked to complete two different types of writing tasks (expository writing task and argumentative writing task) in different planned conditions (indiv...
A mathematical model considering mass and momentum transfer was developed for simulation of ethanol dewatering via pervaporation process. The process involves removal of water from a water/ethanol liquid mixture using a dense polymeric membrane. The model domain was divided into two compartments including feed and membrane. For a description of water transport in ...
The spatial segregation of the populations occurs commonly in ecology. One typical way to understand this phenomenon is consider strong competition some species. In paper, we shall multiple-species competition-diffusion models. Under condition that interspecies rates are large, show occurs. Furthermore, derive two-phase Stefan-like problems appearing as singular limit, which may provide modelin...
In this paper we consider a nonlinear two-phase Stefan problem in one-dimensional space. The problem is mapped into a nonlinear Volterra integral equation for the free boundary.
We show the boundary controllability to stationary states of Stefan problem with two phases and in one dimension space variable. In case an initial condition that is a state for time control large enough, we also obtain sign constraints associated problem. Our method based on flatness approach consists writing solution controls through outputs their derivatives. construct these as Gevrey functi...
stefan problem with kinetics is reduced to a system of nonlinear volterra integral equations of second kind and newton's method is applied to linearize it. product integration solution of the linear form is found and sufficient conditions for convergence of the numerical method are given. an example is provided to illustrated the applicability of the method.
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